of columbus



Patented Apr. 8, 1930 UNITED STATES DAVID H. EBINGER, OF COLUMBUS, OHIO, ASSIGNOR TO THE D. A. EBINGER SANITARY PATENT OFFICE MANUFACTURING COMPANY, OF COLUMBUS, OHIO, A CORPORATION OF OHIO LIQUID-COOLING SYSTEM Application filed November 11, 1927. Serial No. 232,698.

This invention relates to improvements in mechanical cooling systems, and is particularly directed to a novel type of heat eX- changer for use in such 'system by means of which a structurally simple yet eficient arrangement is provided forreducing the tempera'ture of a liquid circulated through the heat exchanger to render the liquid suitably cool for drinking purposes. Specifically the invention is directed to Water coolers of the mechanically cooled type and Which are used in office buildings, factories or other similar places, although the inventiony in other as pects possesses much Wider application.

In carrying out the invention a heat ex# changer has been provided, particularly for use in water coolers', which consists of a casing in which is removably and centrally positioned a mechanically operating cooling unit, the Walls of the latter being spaced from the walls of the cylinder to provide a liquid circulating chamber, said chamber having the 4chilled surfaces of the cooling unit.

upper portion thereof provided with a liquid inlet pipe andthe lower portion with an outlet pipe, these pipes permitting the circula" tion of a liquid under pressure through said chamber so that the liquid may contact with the chilled surfaces. of the cooling unit to` quickly and effectively lower the temperature of the liquid to render the same suitable for the purposes for which it is intended.

Another feature of the invention resides in providing the interior of the casing with a liquid distributor which receives the liquid as the latter enters the casing and retards and directs the How of the liquid to insure `the required contact thereof with the cooled or' For a more detailed understanding of the invention reference is to be had to the following description and the accompanying drawing, wherein:

Figure 1 is a vertical sectional view taken through the improved heatv exchanger comprising the present invention,

Figure 2 is a transverse vertical sectional view taken on the line 2-2 of Figure 1,

Figure 3 is an end elevation of the heat Referring more particularly to the drawings, the numeral 1 ldesignates my improved heat exchanger in its entirety, and the same is formed to include a cylindrical casing 2 having a closed end 3 and an open end or side which is bounded by an annular flange 4.

vSecured to this lang'e is a detachable cover plate 5 which is provided with an opening 6; the axis of which is disposed eccentrically with respect to the principal axis ofthe casing, screws or the like being employed to detachably connect the plate with the flange 4. Securedto the inner surface ofthe plate 5 is a cooling unit 7 which is disposed longitudinally Within the casing 2 with the outer Wallsl thereof spaced from the innerA walls of said casing to provide a Water circulating chamber 8.` In this instance the cooling unit illustrated may be of the flooded boiler type intov which sulphur dioxide is intro- 'duced in liquid form, then gasified by the extract-ion of heat from the surrounding media and then mechanically compressed and reduced to liquidv form for re-circulation.

through the unit or boiler 7. I, of course, do not limit myself to the use of this particular type of unit since, obviously, I may utilize with equal etlicacy the expansion type otcooling coil in the device, or any other system of 'mechanical refrigeration. The opening- 6 of the plate 5 is situated so as to afford couvVenier-1t access to the valves 9 carried by the outer end of the boiler for controlling the circulation of liquid and gaseous SO2 to and from the boiler', and to the associated compressing apparatus, not shown.

The liquid to be cooled entersthe top ot the chamber 8 by way of the perforated iiilet head 10, which latter has connection with of contact between the liquid and the cooling unit is provided to produce efficient heat interchange, and to lower the temperature of the liquid. The distributor serves in a measure to help retard the flow of the liquid, due to the restricted openings 15, so that the passage of the liquid through 4the appal ratus Will be suiiiciently slow, even though under pressure, to insure the desired heat exchange.

The inner walls of the casing of cylinder 2 are coated to eliminate corrosion or contamination of the liquid, particularly when the latter is used for drinking purposes. The chamber or circulating space 8 is filled with the liquid and is replenished from time to time by Way of the inlet head 10, and is discharged through the head 12 in the bottom of the casing, the same being then led to a bubbling fountain or a circulating Water line. At the point where the Water enters the cylinder the distributor 14 is used so as to secure eicient distribution of the incoming water over all surfaces of the cooling unit, the distributor functioning to insure that the warmer or incoming Water Will be kept to the top of the casing and the cooled, usable Water at thebottoni.

What is claimed is:

1. In a cooling device, a casing-open at one end, adetachable closure for the open end of said casing, a cooling unit carried by said closure and situated longitudinally Within said casing, the longitudinal axisof said cooling unit being situated above the longitudinal axis of said casing,` a liquid intake in the top of said casing above said cooling unit, and a liquid outlet at the bottom of said casing below said cooling unit, said intake and outlet being disposed in substantially registering vertical planes.

2. In a cooling device, a casing, a cooling unit positioned Within said casing, liquid inlets and outlets entering opposite sides of said casing, and a distributor positioned between said cooling unit and said casing to initially receive the liquid entering by Way of said inlet, said distributor serving to spread the liquid over the full area of said cooling unit. l A

3. Ina cooling device, a casing open at one end, a detachable closure for the open end of said casing, a cooling unit carried by said closure and situated Within said casand a liquid distributor surrounding said l 4. In a cooling device, a`casing open at one end, a detachable closure for the open end of said casing, a cooling unit carrled by said closure and situated longitudinallyl Within said casing but spaced from the Walls thereof the longitudinal axis'of s'aid cooling unit being situated above the longitudinal axis of said casing, a liquid inlet connected with the top of said casing above said coolingunit and a liquid outlet at the bottom of said Casin and'below said cooling unit, said inlet being above the midportion :v

of said cooling unit.

In testimony whereof I afiix my signature.

DAVID vI-I. EBINGER.

ing but spaced from the Walls thereof to l 

